Mathematics - Facts, Concepts and Questions

1.    Roster form of set is     (a)    Writing all the objects together one after another     (b)    Writing some of the objects     (c)    Writing all the objects separated by commas and then enclosing all of them within one curly bracket     (d)    Mentioning the property satisfied by all objects Ans. (c) 2.    Set Builder form of the set {1, 3, 5, 7, 9} is     (a)    {x : x is odd natural number and less than 10}     (b)    {x : x is natural number}     (c)    {x : x = 2n + 3, n is natural number less than 3}     (d)    None of these Ans. (a) 3.    If every element of set A is also an element of set B then     (a)    A is subset of B        ...